Pure acid is to be added to a 10 % acid solution to obtain 99 L of a 20 % acid solution. What amounts of each should be used?

Use the rules of exponents to evaluate or simplify. Write without negative exponents 8-squr3 is the conjugate of 8+squar 3

Brian frosted a cake top shaped like a parallelogram with a base of 13 inches and a height of 9 inches. nancy frosted a triangular cake top with a base of 15 inches and a height of 12 inches.

Karen's dog walking service charges a flat rate of $40 per month plus $3 per mile that each dog is walked. Annette does not charge a monthly fee for her dog walking servicee, but she charges $8 per mile that each dog is walked.

A student simplifies (6b + 4r) - (2b + r) and says that the result is 4b + 5r. Explain the error and describe the correct steps to simplify the expression.

14. Ms. Smith has 30 students in her class: 20 are boys and 10 are girls. Mr. Jones also has 30 30 students in his class: 15 are boys and 15 are girls. One student is selected from each class to be on the student council.

10. Find the theoretical probability of rolling a number less than 4 on a standard number cube

What is the range of y=-3x^2+6x-8

Describe how you would find how much grass seed is needed to cover a triangular plot of land

If the diagonals of a parallelogram are congruent and are perpendicular bisectors of each other than what is it

Which polynomial is a perfect square trinomial? 9x2 - 12x + 4 36b2 - 24b + 16 16x2 - 24x - 9 4a2 - 10a - 25